Let's start with talent. At first, Liu Bei was alone. Later, Taoyuan became sworn, and Liu Bei had two sworn brothers, Guan Yu and Zhang Fei. Later, Zhuge Liang was a famous strategist, followed by Pang Tong, Fazheng and other military strategists, as well as Zhao Yun, Ma Chao and Huang Zhong. However, many generals such as Guan Yu and Zhang Fei died one after another, and Jingzhou fell, which greatly weakened the strength of Shu. What time? There is no general Liao Hua as a pioneer in Shu? No matter how big the chassis is, Shu has no fighting capacity. And Liu Bang, from beginning to end, has always been a courageous and resourceful general, such as Han Xin and Sean.
Then consider it from the hostile side. Liu Bang's opponent is Xiang Yu, whom we know. He is brave and foolhardy, only knows how to fight and kill, and never understands that heroes should be useful. Unskilled use is often calculated by others. Liu Bei of the Three Kingdoms is different. His enemies are Cao Cao and Sun Quan. These people are wily, one deeper than the other. Speak of the devil first. He can propose to gather the eighteen-route governors to crusade against Dong Zhuo, and he can know people and be good at their duties. Lu Bu, whose force value is the first, actually died at his hands. Except Sun Quan of Soochow? Are there any children like Sun Zhongmou? Cao Cao's evaluation of Sun Quan is so high that it can be seen that Sun Quan's ingenuity is invincible.
Apart from anything else, from the above two aspects, it is enough to make Liu Bei unable to unify the world. The so-called Liu Bang can dominate the world, which may be due to his advantages in time, place, people and all aspects.